Improved evaporator



l. H. PALMER.

Evaporator.

Patented July 25, 1865.

. Wvsses Ytachcd appliances.

UNITED STATES PATENT OFFICE.

ISAAC PALMER, OF LODI, WISCONSIN.

IM PROVED EVAPO RATO R.

Speciiication forming part of Letters Patent No. 48,990, dated July 25, 1865.

declare the following to be a full, clear., and exact description of the nature, construction,

and operation of the same, reference being had to the accompanying drawings, which are made part of this specification, in which- Figure l is a plan of -my evaporator and at- Fig. 2 is a vertical section of the same on the line a: 4r, Fig. 1.

The sameletters referto corresponding parts Vin the different figures.

My improvements consist of a skimming device with certain details of construction, which will be specifically described presently.

To enable one skilled in the art to which my invention appertains to construct and use the same, I will proceed to describe it.

A is an evaporating-pnn mounted upon legs or walls, or in any other suitable manner, over the fire.

O D E are three rollers, disposed as shown in Fig. 2, and journaled upon pillars. The said rollers are encircled by chains F, and are simultaneously moved ou application of power to the pulley L on the roller C.

Skimmers G are pivoted to the carriages or holders I, which are secured to the chains F. Each skimmeris partially divided by a groove, H, on its under surface, which straddles the partition B ofthe evaporating-pan. Thus each skimmer removes the scum from two adjacent subdivisions of the pan A, and moves freely upon its pivoted point in the holders I, the skimmers being supported, while making their eieetive stroke, by the subdivisional plates B, and as they arrive at a point above the scumtrough M tippingso as to discharge their more fluid contents, the skimmers being wiped out by the fingers K, Whose ends scrape the troughs, rising so as to allow the passage of the skimmers by vibration on the rod N, which connects the pillars J J.

In the operation of boiling, the scum collects more at certain times than atothers, and whenever it may be desired to put any skimmer out of service itis fastened, as shown at G', by a a hook, M, which prevents its coming in contact with the pan while makingits revolution. T he end of the screw-'B in the skimmer impinges upon the divisional plate or wire B and limits the depth ot' penetration of the skimnier.

The iioor or bottom of the skimmers may be perforated, if desirable.

Having thusdescribcd my invention, what I claim as new therein, and desire to secure by Letters Patent, is-

1. A revolving skimmer for removing the scum from the surface ofthe liquid.

7. The skimmer divided or otherwise hinged in a carriage or holder attached to the endless carrier belt or chain.

The above specification of my improvement in evaporators signed this 11th `day of May,

ISAAC H. PALMER. Witnesses:

ALEXR. A. C. KLAUCKE, EDWARD H. KNIGHT. 

